I like extra wide backings torn because I know then I will get the yardage I asked for. I have lost as much as 1/4 yard when they cut the but I like to have 45" fabric cut with rotary cutter or even scissors. since we all straighten with a rotary cutter, even when Ii prewash, I don't lose as much fabric. There is only one shop I have been to that tears and when i asked her to please cut the answer was "We don't do that" When I pointed out haw badly the threads along the edge had been pulled and how much I was losing she said I should just by extra fabric to compensate. I never went back to that store.